Examine source code of Workbench Tools

{
  "name": "Workbench Tools",
  "description": "Helper tool for Apptek's workbench. Provides option to copy text along with reference from web pages",
  "version": "1.0.3",
  "author": "Apptek",
  "manifest_version": 2,
  "permissions": [
    "contextMenus",
    "clipboardWrite",
    "clipboardRead",
    "storage",
    "scripting",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6be993ad-3658-4a6e-98db-2204d207637e}"
    }
  }
}